On Thu, Nov 18, 2021 at 10:55:00AM +0100, Simon Hoffmann wrote: > > > > > > >GMail still wont accept my IPv6 submitted mails. > > > > Are you using ipv6 connectivity over tunnel from tunnelbroker.net? > > Nope. My relays have "real" IPv6 /64 networks assigned to their interfaces > natively. > > However, I'd still like to only use IPv4 when sending messages.
Why? Why not fix the IPv6 issue? Our servers deliver to gmail over IPv6 with no issues. > Suggestions? Set a fixed IPv4 source address using the src parameter in the action directive of your smtpd.conf.

